I am running a script, where there are test cases, and within test case, I do a lot of back and forth between two machines. My application is a typical Agent/Customer interactions, so in a particular test case, I need to some actions as customer and some as an agent. To implement this, for example to do some actions as a customer I use Connect (customer), Set (customer) to connect to particular machine and Disconnect (machine) command to Disconnect (customer). I repeat the same commands when I need to some actions as an Agent.

While I am doing the actions described above, sometimes when I am connected as a customer and doing some actions, the browser (IE 5.5) on the agent machine crashes. I am not sure what the problem is all about.
Any suggestions or advises on this will be greatly appreciated.